[DRE-maint] Bug#853841: Bug#853841: schleuder: Decide how the schleuder v2 -> v3 upgrade path should look like

[Christian Hofstaedtler]

* Georg Faerber <georg at riseup.net> [170201 13:15]:
> - schleuder doesn't exist in jessie, but in wheezy.
> - According to popcon, there are currently four installs out there.
> - I'm aware of some large installations with >100 lists each.

> Upstream is more in favor of failing (hence the code) if v2 data is
> found, asking the user to move the data out of the way, resume the
> install and migrate after this, which is a (more) manual process then;
> but maybe this would be tolerable as well, because, I guess, most people
> running schleuder have at least some basic script skills. A positive
> side effect would be to cleanup up '/var/lib/schleuder', so we don't
> keep old data inside there "forever".

I'd think moving /var/lib/schleuder out of the way in the postinst
is acceptable here; just let the user know you're doing that (print
something, don't use debconf).

-ch